Received a no heat call in Chaska, MN. I found that the furnace was wired incorrectly, and suggested an electrician wire the furnace the correct way so it was up to code. These pictures show this is NOT the correct way to install a furnace.
Not all HVAC contractors are expert electricians. Whether this was a do-it-yourself wiring or from someone who replaced the furnace, there was clearly a change that needed to be made to improve safety and effectiveness.